New 2018 521 L here. Been Lowrance/ Motor Guide guy for 30 years. Got 12" Solix on Dek It on bow with Si ducer on Ultrex. Have watched many of Doug Vahrenberg videos on U tube on the Solix and Ultrex stuff. Great videos and HB support, helped me greatly from asking stupid questions here. I watched one the other day and it looked like he had a rod sock on his Ultrex cables. I watched another today Tips N Tricks 186 Ultrex Ducer install. He does have a sleeve on his Ultrex/ducer cable that looks like a rod sock with Velcro strip? I searched TW for sleeve and got 9 pages of shirts. Would like to get rid of zip ties on mine and install sleeve. Anyone have a source for these?